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Yuav ua li cas xaiv cov cuab yeej nqa txoj cai hauv Suav teb
Txheej txheem cej luam: Cov khoom nqa nqa yog hais txog cov khoom siv uas siv los nqa cov khoom hnyav.Xaiv cov khoom siv rigging thiab nqa khoom kom ntseeg tau tias koj qhov chaw ua haujlwm muaj kev nyab xeeb thiab nyab xeeb.1, Nws yog ib qho tseem ceeb, thaum saib cov khoom nqa nqa, kom ntseeg tau tias koj tuaj yeem ua tau zoo ...Nyeem ntxiv -
6 cov cuab yeej xav tau rau kev kho kom zoo nkauj Christmas xyoo 2022
Yog tias koj tab tom nrhiav cov tswv yim los pab koj kho koj lub tsev rau hnub so, koj tuaj yeem xav kawm ntxiv txog cov khoom siv Christmas nrov tshaj plaws.Cov nram qab no 6 JTLE lifting khoom yuav pab tau koj.1, Thawj cov cuab yeej: Cav crane Rau Cov Khw Muag Khoom, khw muag khoom, tsev so ...Nyeem ntxiv -
Kev tswj xyuas txhua hnub ntawm crane
1. Kev tshuaj xyuas txhua hnub.Tus neeg tsav tsheb yog lub luag haujlwm rau cov khoom siv tu niaj hnub ntawm kev ua haujlwm, feem ntau suav nrog kev tu, lubrication ntawm cov khoom sib kis, kev hloov kho thiab ceev ceev.Ntsuas qhov rhiab heev thiab kev ntseeg siab ntawm cov cuab yeej kev nyab xeeb los ntawm kev ua haujlwm, thiab moni ...Nyeem ntxiv -
Kev loj hlob keeb kwm ntawm crane
Nyob rau hauv 10 BC, tus kws kes duab vajtse Roman thaum ub Vitruvius piav txog lub tshuab nqa hauv nws phau ntawv architectural.Lub tshuab no muaj lub mast, sab saum toj ntawm mast yog nruab nrog ib tug pulley, txoj hauj lwm ntawm lub mast yog tsau los ntawm ib tug rub hlua, thiab lub cable hla lub pulley yog ...Nyeem ntxiv
